3869990 has 16 divisors (see below), whose sum is σ = 7136640. Its totient is φ = 1510080.

The previous prime is 3869989. The next prime is 3869993. The reversal of 3869990 is 999683.

3869990 = 22² + 23² + ... + 226².

3869990 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3869993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4310 + ... + 5129.

It is an arithmetic number, because the mean of its divisors is an integer number (446040).

Almost surely, 2^3869990 is an apocalyptic number.

3869990 is a deficient number, since it is larger than the sum of its proper divisors (3266650).

3869990 is a wasteful number, since it uses less digits than its factorization.

3869990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9487.

The product of its (nonzero) digits is 104976, while the sum is 44.

The square root of 3869990 is about 1967.2290156461. The cubic root of 3869990 is about 157.0013117393.

The spelling of 3869990 in words is "three million, eight hundred sixty-nine thousand, nine hundred ninety".